| 摘要 |
<p>An aerator (10) for use in a liquid medium comprises a liquid inlet (14) to a venturi chamber (18), pump means for drawing liquid through the venturi chamber an air inlet (24) connected to the venturi chamber, whereby air is drawn into and aerates the liquid drawn through the venturi chamber, an outlet (22) from the venturi chamber for discharging the aerated liquid into the liquid medium and float means (26) for supporting the aerator in the liquid medium. <IMAGE></p> |
